X-Git-Url: https://vcs.fsf.org/?a=blobdiff_plain;f=extlib%2Fleaflet%2Fsrc%2Flayer%2Fvector%2FPolyline.js;fp=extlib%2Fleaflet%2Fsrc%2Flayer%2Fvector%2FPolyline.js;h=606d7d71ce73076888b96efa5f336f55b87ce87f;hb=c5ba5b0456a711d157e317f220e9c739226e7f50;hp=0000000000000000000000000000000000000000;hpb=c47a03b909ecd97cab5b144d0cab007b62b92a90;p=mediagoblin.git

diff --git a/extlib/leaflet/src/layer/vector/Polyline.js b/extlib/leaflet/src/layer/vector/Polyline.js
new file mode 100644
index 00000000..606d7d71
--- /dev/null
+++ b/extlib/leaflet/src/layer/vector/Polyline.js
@@ -0,0 +1,112 @@
+
+L.Polyline = L.Path.extend({
+	initialize: function(latlngs, options) {
+		L.Path.prototype.initialize.call(this, options);
+		this._latlngs = latlngs;
+	},
+	
+	options: {
+		// how much to simplify the polyline on each zoom level
+		// more = better performance and smoother look, less = more accurate
+		smoothFactor: 1.0,
+		noClip: false,
+		
+		updateOnMoveEnd: true
+	},
+	
+	projectLatlngs: function() {
+		this._originalPoints = [];
+		
+		for (var i = 0, len = this._latlngs.length; i < len; i++) {
+			this._originalPoints[i] = this._map.latLngToLayerPoint(this._latlngs[i]);
+		}
+	},
+	
+	getPathString: function() {
+		for (var i = 0, len = this._parts.length, str = ''; i < len; i++) {
+			str += this._getPathPartStr(this._parts[i]);
+		}
+		return str;
+	},
+	
+	getLatLngs: function() {
+		return this._latlngs;
+	},
+	
+	setLatLngs: function(latlngs) {
+		this._latlngs = latlngs;
+		this._redraw();
+		return this;
+	},
+	
+	addLatLng: function(latlng) {
+		this._latlngs.push(latlng);
+		this._redraw();
+		return this;
+	},
+	
+	spliceLatLngs: function(index, howMany) {
+		var removed = [].splice.apply(this._latlngs, arguments);
+		this._redraw();
+		return removed;
+	},
+	
+	_getPathPartStr: function(points) {
+		var round = L.Path.VML;
+		
+		for (var j = 0, len2 = points.length, str = '', p; j < len2; j++) {
+			p = points[j];
+			if (round) p._round();
+			str += (j ? 'L' : 'M') + p.x + ' ' + p.y;
+		}
+		return str;
+	},
+	
+	_clipPoints: function() {
+		var points = this._originalPoints,
+			len = points.length,
+			i, k, segment;
+
+		if (this.options.noClip) {
+			this._parts = [points];
+			return;
+		}
+		
+		this._parts = [];
+		
+		var parts = this._parts,
+			vp = this._map._pathViewport,
+			lu = L.LineUtil;
+		
+		for (i = 0, k = 0; i < len - 1; i++) {
+			segment = lu.clipSegment(points[i], points[i+1], vp, i);
+			if (!segment) continue;
+			
+			parts[k] = parts[k] || [];
+			parts[k].push(segment[0]);
+			
+			// if segment goes out of screen, or it's the last one, it's the end of the line part
+			if ((segment[1] != points[i+1]) || (i == len - 2)) {
+				parts[k].push(segment[1]);
+				k++;  
+			}
+		}
+	},
+	
+	// simplify each clipped part of the polyline
+	_simplifyPoints: function() {
+		var parts = this._parts,
+			lu = L.LineUtil;
+		
+		for (var i = 0, len = parts.length; i < len; i++) {
+			parts[i] = lu.simplify(parts[i], this.options.smoothFactor);
+		}
+	},
+	
+	_updatePath: function() {
+		this._clipPoints();
+		this._simplifyPoints();
+		
+		L.Path.prototype._updatePath.call(this);
+	}
+});
\ No newline at end of file